Repellix Super-Hydrophobic Ceramic Coating

Two side-by-side cellphone PCB’s are immersed into water. The Repellix coated PCB (right) appears silvery,
as if a force field were pushing the water away. What we are observing is the reflection of light from the air/water meniscus layer surrounding the Repellix coated board.

As the Repellix board is removed, it remains completely dry, in contrast to the uncoated PCB which wets from the immersion.